Problems

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
0-1 Sequences	9373	1418	15%	0.00	1860	954	51%	5.7
10 Kinds of People	21553	4365	20%	0.01	3678	2664	72%	4.9
2, 4, 6, Greaaat	533	87	16%	0.19	48	28	58%	8.7
2048	9045	4192	46%	0.00	4021	3447	86%	2.2
3-Sided Dice	2640	214	8%	0.00	429	152	35%	8.7
3D Printed Statues	11219	5204	46%	0.00	4786	4290	90%	1.9
3D Printer	850	145	17%	0.00	343	110	32%	8.8
4 thought	10085	3411	34%	0.00	3329	2802	84%	2.4
A Brief Gerrymander	492	101	21%	0.12	88	43	49%	8.8
A Classy Problem	10787	2780	26%	0.01	2412	1855	77%	4.4
A Different List Game	7190	499	7%	0.00	927	180	19%	9.2
A Different Problem	34054	12557	37%	0.00	11579	10029	87%	2.3
A Favourable Ending	1791	472	26%	0.00	439	340	77%	4.5
A Feast For Cats	2738	1025	37%	0.00	706	603	85%	3.9
A Flea on a Chessboard	595	131	22%	0.01	142	104	73%	5.1
A Horse Shoe-In	85	8	9%	0.45	13	7	54%	8.1
A List Game	9351	2793	30%	0.00	2662	2246	84%	2.9
A Mazing!	3052	673	22%	0.09	332	247	74%	5.7
A Multiplication Game	978	383	39%	0.00	408	312	76%	4.4
A New Adventure	1111	169	15%	0.00	188	127	68%	6.2
A New Alphabet	12093	5425	45%	0.00	5057	4669	92%	1.7
A+B Problem	8593	842	10%	0.03	1197	403	34%	8.2
A1 Paper	5793	1726	30%	0.00	1706	1353	79%	3.7
ABC	15178	6985	46%	0.00	6545	5961	91%	1.7
ACM Contest Scoring	7344	4570	62%	0.00	4073	3842	94%	1.5
AI Jeopardy	429	49	11%	0.02	51	36	71%	7.8
Aaah!	30535	14212	47%	0.00	12689	11839	93%	1.5
Ab Initio	1221	227	19%	0.09	184	112	61%	7.7
Abandoned Animal	2125	461	22%	0.03	533	386	72%	5.2
Above Average	10302	4207	41%	0.00	4047	3617	89%	2.3
Abstract Art	386	125	32%	0.00	103	79	77%	5.5
Abstract Painting	459	180	39%	0.00	154	121	79%	4.6
Absurdistan Roads II	663	226	34%	0.00	222	148	67%	6.9
Absurdistan Roads III	1619	467	29%	0.02	438	334	76%	5.5
Access Points	421	147	35%	0.01	140	108	77%	5.9
Accounting	349	134	38%	0.02	98	80	82%	4.6
Add 'Em Up!	1245	339	27%	0.01	324	252	78%	4.1
Adding Words	11614	2845	24%	0.00	2752	2149	78%	3.2
Adjoin the Networks	2248	596	27%	0.00	498	399	80%	5.5
Administrative Difficulties	1465	291	20%	0.03	314	215	68%	6.2
Ads	627	42	7%	0.00	93	26	28%	5.8
Advanced Causal Measurements	118	37	31%	0.10	34	28	82%	6.0
Adventure Begins	278	87	31%	0.06	94	70	74%	5.4
Adventures in Moving -- Part IV	1593	358	22%	0.00	305	258	85%	4.4
Air Conditioned Minions	5583	1589	28%	0.00	1641	1260	77%	3.6
Airline Hub	2214	489	22%	0.01	427	253	59%	6.7
Airport Coffee	931	200	21%	0.08	192	135	70%	7.0
Airport Construction	3524	453	13%	0.02	381	203	53%	7.6
Airport Logistics	67	15	22%	0.00	22	15	68%	7.3
Airports	487	150	31%	0.11	131	94	72%	6.6
Akcija	8103	3636	45%	0.00	3301	2946	89%	2.0
Aladin	773	78	10%	0.10	129	30	23%	8.5
Alchemy	138	26	19%	0.02	36	21	58%	7.5
Alea iacta est	45	16	36%	0.19	20	15	75%	6.5
Alehouse	309	113	37%	0.03	95	70	74%	6.0
Alex and Barb	418	165	39%	0.00	187	147	79%	2.9
Alice in the Digital World	5303	1295	24%	0.01	1177	922	78%	3.9
Alien Codebreaking	265	14	5%	3.23	42	11	26%	9.3
Alien Numbers	2545	1343	53%	0.00	1315	1201	91%	2.0
All Different Directions	1494	657	44%	0.00	616	547	89%	2.5
All Friends	1083	205	19%	0.00	183	99	54%	8.8
All Just A Dream	2217	550	25%	0.05	413	312	76%	5.2
All Kill	56	46	82%	0.00	35	31	89%	3.3
All Pairs Shortest Path	11596	2152	19%	0.00	1369	973	71%	5.2
All about that base	2988	1179	39%	0.00	1144	965	84%	2.9
All is Well	90	27	30%	0.03	25	23	92%	4.7
Allergy Test	569	148	26%	0.00	176	90	51%	7.7
Alloys	367	121	33%	0.00	133	108	81%	5.4
Almost Perfect	8734	2049	23%	0.00	2170	1720	79%	3.3
Almost Union-Find	8119	1376	17%	0.02	1296	738	57%	6.2
Alphabet	1844	940	51%	0.00	940	797	85%	3.2
Alphabet Animals	2361	724	31%	0.00	706	572	81%	3.3
Alphabet Spam	9091	5618	62%	0.00	4638	4455	96%	1.4
Alternative Anagram	148	60	41%	0.00	44	36	82%	5.2
Alternative Bracket Notation	209	89	43%	0.00	95	79	83%	5.1
Altruistic Amphibians	478	125	26%	0.22	107	78	73%	5.2
Amalgamated Artichokes	4336	1950	45%	0.01	1717	1506	88%	2.7
Amanda Lounges	1574	470	30%	0.03	415	334	80%	5.3
Amazing Adventures	387	106	27%	0.02	119	86	72%	6.2
Amazing Race	349	93	27%	0.29	99	69	70%	7.5
Ambiguous Result	269	59	22%	0.02	90	56	62%	7.8
Amsterdam Distance	1701	801	47%	0.00	827	696	84%	2.7
An I for an Eye	891	241	27%	0.00	274	202	74%	4.8
An Industrial Spy	1888	1023	54%	0.02	795	691	87%	3.0
Anagram Counting	4127	1613	39%	0.00	1552	1310	84%	2.6
Andrew the Ant	360	101	28%	0.05	110	85	77%	4.1
Animal Classification	1595	365	23%	0.03	314	209	67%	6.8
Another Brick in the Wall	3541	1803	51%	0.00	1741	1594	92%	1.9
Another Candies	8604	2368	28%	0.00	2419	2009	83%	2.7
Another Coin Weighing Puzzle	377	122	32%	0.00	103	88	85%	4.5
Another Dice Game	108	69	64%	0.00	67	58	87%	4.7
Another Query on Array Problem	1768	225	13%	0.05	354	159	45%	7.7
Antenna Placement	168	71	42%	0.00	55	43	78%	6.4
Anthony and Cora	979	262	27%	0.00	309	216	70%	5.4
Anthony and Diablo	3552	1267	36%	0.00	1288	1118	87%	2.6
Antiarithmetic?	1749	312	18%	0.01	392	222	57%	7.4
Ants	4103	1834	45%	0.00	1474	1295	88%	2.5
Apaxiaaaaaaaaaaaans!	14778	8802	60%	0.00	7853	7491	95%	1.6
Apostrophe Catastrophe	120	30	25%	0.00	32	21	66%	6.3
Appalling Architecture	768	224	29%	0.00	197	163	83%	4.2